[Pixel 7 Pro] Failed to boot into userspace fastboot

qontinuum

Hello,
I am trying to flash the latest build for Pixel 7 Pro (2022101800) but at some point the phone bootloops with the google logo and doesn't go further.
In the terminal I get the following error:

extracting vendor_boot.img (64 MB) to disk... took 0.185s
archive does not contain 'vendor_boot.sig'
Sending 'vendor_boot_b' (65536 KB)                 OKAY [  2.240s]
Writing 'vendor_boot_b'                            OKAY [  0.074s]
extracting super_empty.img (0 MB) to disk... took 0.000s
Rebooting into fastboot                            OKAY [  0.000s]
< waiting for any device >
fastboot: error: Failed to boot into userspace fastboot; one or more components might be unbootable.
Rebooting into bootloader                          OKAY [  0.000s]
Finished. Total time: 0.051s

The Pixel is on latest stock rom version and I am using the android-tools 33.0.3 packaged by Arch.
Is it a known issue and is there a fix for this?

EDIT: The error appears because I try to access fastboot by maintaining VOL_DOWN after several loops

Kamaehuakanaloa

qontinuum Ditto. I used the web installer on my Pixel Pro 7 and did not encounter any issues, either with the initial install, or the update I received yesterday morning.

unwat

Why don't you use the web installer? It's much easier.

Even though it's an experimental build, it's still available using the web installer according to this post: https://discuss.grapheneos.org/d/1345-experimental-grapheneos-support-for-the-pixel-7-and-pixel-7-pro

dcd-graphenediscuss

I had the exact same problem with the PowerShell (batch file) installation, so there is an issue with that installation or with a Google driver or the Tools. Not sure where the problem is, though.

On a whim, I tried the web installer and it worked fine.

But I think there's another problem with the installer. When I tried to restore the phone back to a factory image, it says there's a file missing (that I assume should be there) and it quits.

dcd-graphenediscuss

Okay, I did some experimenting with trying to restore the Google ROM image, and it failed. On a thought, I decided to search for the latest Platform-Tools, and mine was 5 months(!) out of date. I downloaded and installed the most recent Platform-Tools and everything worked fine: I reinstalled the Google ROM image and I installed GrapheneOS without issue.

dcd-graphenediscuss

If I wasn't clear in my prior posts, I use the Powershell from Windows to install both the Google ROM and the GrapheneOS images. While the browser installer worked just fine, I like the command line better.